diff --git a/include/re_dbg.h b/include/re_dbg.h
index 8ab1e9370..859a54889 100644
--- a/include/re_dbg.h
+++ b/include/re_dbg.h
@@ -8,6 +8,8 @@
 extern "C" {
 #endif
 
+struct pl;
+
 /** Debug levels */
 enum {
 	DBG_EMERG       = 0,       /**< System is unusable               */
@@ -49,47 +51,87 @@ enum {
  *
  * Print warning message
  */
+
+/**
+ * @def DEBUG_WARNING_ID(...)
+ *
+ * Print warning message with identifier
+ */
+
 #if (DEBUG_LEVEL >= 4)
-#define DEBUG_WARNING(...) \
+#define DEBUG_WARNING(...)                                                    \
 	dbg_printf(DBG_WARNING, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_WARNING_ID(...)                                                 \
+	dbg_printf_id(debug_id, DBG_WARNING, DEBUG_MODULE ": " __VA_ARGS__)
 #else
 #define DEBUG_WARNING(...)
+#define DEBUG_WARNING_ID(...)
 #endif
 
+
 /**
  * @def DEBUG_NOTICE(...)
  *
  * Print notice message
  */
+
+/**
+ * @def DEBUG_NOTICE_ID(...)
+ *
+ * Print notice message with identifier
+ */
+
 #if (DEBUG_LEVEL >= 5)
-#define DEBUG_NOTICE(...) \
-	dbg_printf(DBG_NOTICE, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_NOTICE(...) dbg_printf(DBG_NOTICE, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_NOTICE_ID(...)                                                  \
+	dbg_printf_id(debug_id, DBG_NOTICE, DEBUG_MODULE ": " __VA_ARGS__)
 #else
 #define DEBUG_NOTICE(...)
+#define DEBUG_NOTICE_ID(...)
 #endif
 
+
 /**
  * @def DEBUG_INFO(...)
  *
  * Print info message
  */
+
+/**
+ * @def DEBUG_INFO_ID(...)
+ *
+ * Print info message with identifier
+ */
+
 #if (DEBUG_LEVEL >= 6)
-#define DEBUG_INFO(...) \
-	dbg_printf(DBG_INFO, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_INFO(...) dbg_printf(DBG_INFO, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_INFO_ID(...)                                                    \
+	dbg_printf_id(debug_id, DBG_INFO, DEBUG_MODULE ": " __VA_ARGS__)
 #else
 #define DEBUG_INFO(...)
+#define DEBUG_INFO_ID(...)
 #endif
 
+
 /**
  * @def DEBUG_PRINTF(...)
  *
  * Print debug message
  */
+
+/**
+ * @def DEBUG_PRINTF_ID(...)
+ *
+ * Print debug message with identifier
+ */
+
 #if (DEBUG_LEVEL >= 7)
-#define DEBUG_PRINTF(...) \
-	dbg_printf(DBG_DEBUG, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_PRINTF(...) dbg_printf(DBG_DEBUG, DEBUG_MODULE ": " __VA_ARGS__)
+#define DEBUG_PRINTF_ID(...)                                                  \
+	dbg_printf_id(debug_id, DBG_DEBUG, DEBUG_MODULE ": " __VA_ARGS__)
 #else
 #define DEBUG_PRINTF(...)
+#define DEBUG_PRINTF_ID(...)
 #endif
 
 
@@ -110,13 +152,15 @@ enum dbg_flags {
  * @param len   String length
  * @param arg   Handler argument
  */
-typedef void (dbg_print_h)(int level, const char *p, size_t len, void *arg);
+typedef void(dbg_print_h)(struct pl *id, int level, const char *p, size_t len,
+			  void *arg);
 
 void dbg_init(int level, enum dbg_flags flags);
 void dbg_close(void);
 int  dbg_logfile_set(const char *name);
 void dbg_handler_set(dbg_print_h *ph, void *arg);
 void dbg_printf(int level, const char *fmt, ...);
+void dbg_printf_id(struct pl *id, int level, const char *fmt, ...);
 const char *dbg_level_str(int level);
 
 #ifdef __cplusplus
diff --git a/src/dbg/dbg.c b/src/dbg/dbg.c
index e7a19ea84..16ff81683 100644
--- a/src/dbg/dbg.c
+++ b/src/dbg/dbg.c
@@ -130,7 +130,7 @@ void dbg_handler_set(dbg_print_h *ph, void *arg)
 
 
 /* NOTE: This function should not allocate memory */
-static void dbg_vprintf(int level, const char *fmt, va_list ap)
+static void dbg_vprintf(struct pl *id, int level, const char *fmt, va_list ap)
 {
 	dbg_lock();
 
@@ -171,6 +171,9 @@ static void dbg_vprintf(int level, const char *fmt, va_list ap)
 		(void)re_fprintf(stderr, "[%09llu] ", ticks - dbg.tick);
 	}
 
+	if (pl_isset(id))
+		(void)re_fprintf(stderr, "{%r} ", id);
+
 	(void)re_vfprintf(stderr, fmt, ap);
 
 	if (dbg.flags & DBG_ANSI && level < DBG_DEBUG)
@@ -181,7 +184,8 @@ static void dbg_vprintf(int level, const char *fmt, va_list ap)
 
 
 /* Formatted output to print handler and/or logfile */
-static void dbg_fmt_vprintf(int level, const char *fmt, va_list ap)
+static void dbg_fmt_vprintf(struct pl *id, int level, const char *fmt,
+			    va_list ap)
 {
 	char buf[256];
 	int len;
@@ -201,7 +205,7 @@ static void dbg_fmt_vprintf(int level, const char *fmt, va_list ap)
 
 	/* Print handler? */
 	if (dbg.ph) {
-		dbg.ph(level, buf, len, dbg.arg);
+		dbg.ph(id, level, buf, len, dbg.arg);
 	}
 
 	/* Output to file */
@@ -226,11 +230,31 @@ void dbg_printf(int level, const char *fmt, ...)
 	va_list ap;
 
 	va_start(ap, fmt);
-	dbg_vprintf(level, fmt, ap);
+	dbg_vprintf(NULL, level, fmt, ap);
+	va_end(ap);
+
+	va_start(ap, fmt);
+	dbg_fmt_vprintf(NULL, level, fmt, ap);
+	va_end(ap);
+}
+
+
+/**
+ * Print a formatted debug message
+ *
+ * @param level Debug level
+ * @param fmt   Formatted string
+ */
+void dbg_printf_id(struct pl *id, int level, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	dbg_vprintf(id, level, fmt, ap);
 	va_end(ap);
 
 	va_start(ap, fmt);
-	dbg_fmt_vprintf(level, fmt, ap);
+	dbg_fmt_vprintf(id, level, fmt, ap);
 	va_end(ap);
 }
 
diff --git a/test/main.c b/test/main.c
index 62ff47fa4..da9d7e6e8 100644
--- a/test/main.c
+++ b/test/main.c
@@ -53,10 +53,12 @@ static void usage(void)
 #endif
 
 
-static void dbg_handler(int level, const char *p, size_t len, void *arg)
+static void dbg_handler(struct pl *id, int level, const char *p, size_t len,
+			void *arg)
 {
 	(void)level;
 	(void)arg;
+	(void)id;
 
 	printf("%.*s", (int)len, p);
 }